Where was ______ you found my lost bike?[ ]
A. it
B. that
C. it that
D. that it
答案:B
在锐角三角形中,边a、b是方程x2-2x+2=0的两根,角A、B满足2sin(A+B)-=0,求角C的度数,边c的长度及△ABC的面积. (本题满分12分)
矮星